apan averaging 89 years with a standard deviation of 4 years, normally
distributed. In Tokyo prefecture, female life expectancy averages 85 years with a
standard deviation of 5 years, normally distributed.
(a) What is the probability that a woman moving from Okinawa to Tokyo prefecture will
result in higher life expectancy in both Okinawa and Tokyo?
(b) What is the probability that a group of four women moving from Tokyo to Okinawa
will result in lowering life expectancy in both prefectures?